A 150 W light bulb is designed for an ac voltage of 120 V rms.What is the resistance of the bulb?
A) 150 $\Omega$
B) 144 $\Omega$
C) 96.0 $\Omega$
D) 68.0 $\Omega$
E) 48.0 $\Omega$

Question

Quizplus · Accepted Answer

The resistance can be calculated using the formula $ R = \frac{V^2}{P} $. Substituting the given values, $ R = \frac{(120)^2}{150} = 96 \, \varOmega $.

A 150 W Light Bulb Is Designed for an Ac Ω\OmegaΩ

A 150 W Light Bulb Is Designed for an Ac $\Omega$